| SIMATIC S7-200, EM253 Positioning expansion module, 200 kHz, for controlling stepper motors or servo drives, open-loop control, programming via Micro/WIN |
| Supply voltage |
| permissible range, lower limit (DC) | 11 V |
| permissible range, upper limit (DC) | 30 V |
| Input current |
| from supply voltage L+, max. | 300 mA; from 12 V DC, 130 mA from 24 V DC |
| from backplane bus 5 V DC, max. | 190 mA |
| Power loss |
| Power loss, typ. | 2.5 W |
| Hardware configuration |
| Number of modules per CPU | max. 5 with CPU 226/226XM, max. 3 with CPU 224, max. 1 with CPU 222 |
| Digital inputs |
| Number of digital inputs | 5; P-reading |
| Functions | Stop (STP), reference point switch (RPS), upper limit switch (LMT+), lower limit switch (LMT-), zero point (ZP) |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Input voltage |
| Rated value (DC) | 24 V |
| for signal "0" | STP, RPS, LMT+, LMT- DC 5 V; ZP DC 1 V |
| for signal "1" | STP, RPS, LMT+, LMT- DC 15 V; ZP DC 3 V |
| Input delay (for rated value of input voltage) |
| for standard inputs |
| — parameterizable | Yes; STP, RPS, LMT+, LMT- 0.2 to 12.8 ms; ZP min 2 µs |
| Cable length |
| shielded, max. | 100 m; STP, RPS, LMT+, LMT- 100 m, ZP 10 m |
| unshielded, max. | 30 m; STP, RPS, LMT+, LMT- 30 m, ZP not recommended |
| Encoder |
| Connectable encoders |
| 2-wire sensor | Yes |
| — permissible quiescent current (2-wire sensor), max. | 1 mA |
| Drive interface |
| Signal output I |
| Number | 4; optionally RS 422 / 485 or 5 V DC |
| Type | RS 422 / 485 (P0+, P0-, P1+, P1-) |
| Differential output voltage, min. | 2.8 V; RL = 200 ohms |
| Pulse frequency | 200 kHz; (P0+, P0-, P1+, P1-, P0, P1) |
| Cable length, max. | 10 m; shielded; 1 m unshielded |
| Signal output II |
| Type | 5 V DC(P0, P1, DIS, CLR) |
| Output voltage | 30 V DC |
| Output current | 50 mA; output delay (DIS, CLR) max. 30 µs |
| Potential separation |
| Potential separation digital inputs |
| between the channels | Yes |
| between the channels, in groups of | 1 (STP, RPS, ZP), 2 (LMT-, LMT+) |
| Permissible potential difference |
| between different circuits | 500 V AC |
| Dimensions |
| Width | 71.2 mm |
| Height | 80 mm |
| Depth | 62 mm |
| Weights |
| Weight, approx. | 190 g |
| last modified: | 03/13/2019 |
